docs: def _add_variant_sameas_relationships(self, patient_var_map, rs_map):
          """
          Adds same as relationships between udp variant bnodes and dbsnp ids
          :param patient_var_map:
          :param rs_map:
          :return:
          """
          model = Model(self.graph)
          for patient in patient_var_map:
              for variant_id, variant in patient_var_map[patient].items():
                  variant_bnode = self.make_id("{0}".format(variant_id), "_")
                  build = variant['build']
                  chromosome = variant['chromosome']
                  position = variant['position']
                  reference_allele = variant['reference_allele']
                  variant_allele = variant['variant_allele']
                  if build and chromosome and position\
                          and reference_allele and variant_allele:
                      if re.fullmatch(r'[ATCG]', reference_allele)\
                              and re.fullmatch(r'[ATCG]', variant_allele):
                          # variation is snp
                          rs_id = self._get_rs_id(variant, rs_map, 'snp')
                          if rs_id:
                              dbsnp_curie = 'dbSNP:rs{0}'.format(rs_id)
                              model.addSameIndividual(variant_bnode, dbsnp_curie)
  
                      elif re.fullmatch(r'\-', reference_allele)\
                              or re.fullmatch(r'\-', variant_allele):
                          rs_id = self._get_rs_id(variant, rs_map, 'indel')
                          if rs_id is not None:
                              dbsnp_curie = 'dbSNP:rs{0}'.format(rs_id)
                              model.addSameIndividual(variant_bnode, dbsnp_curie)
                      else:
                          rs_id = self.\
                              _get_rs_id(variant, rs_map, 'indel')
                          if rs_id is not None:
                              dbsnp_curie = 'dbSNP:rs{0}'.format(rs_id)
                              model.addSameIndividual(variant_bnode, dbsnp_curie)
          return